Hermetic separable fastener



June 15, 1943. D.' MARlNsKY TAL 2,321,926'

I-iERMETIC SPARABLE FASTNER Filed Sept. 5, 1941 .2;1 -l'lie Hg TMl 40 ,4,6

A ,Mf ff 74 A'rToRNlsz Patented June 15, 1943 HERMETIC SEPARABLEFASTENER Davis Marinsky and Louis Il. Morin, Bronx, N. Y.

Application September 5, 1941, Serial No. 469,634

' 15 Claims.

This invention relates to separable fasteners of the type employinglstringers coupled and uncoupled by a slider movable longitudinally ofthe stringers. More particularly, the invention relates to hermeticfasteners of this type and kind having means on the stri-nger tapes andslider effecting a seal through the full length of the fastener when thefastener is in fully closed position, as well as to retain the slider inclosed'position, to adapt the device to such uses where a complete sealof an opening is desirable. The novel features of the invention will bebest understood from the following description when taken together withthe accompanying drawing in which certain embodiments of the inventionare disclosed and in which the separate parts are designated by suitablereference characters in each of the views; and in which:

Fig. 1 is a section view through one end portion of a, fastener and theslider arranged thereon showing the slider in retained position.

Fig. 2 is an irregular sectional plan substantially on the irregularline 2-2 of Fig. 1.

Fig. 3 is a cross sectional view, substantially on the line 3 3 of Fig.1, on an enlarged scale.

Fig. 4 is a perspective section of the joined stringer tapessubstantially on the line 4-4 of Fig. 1.

Fig. 5 is a view similar to Fig. l showing another form of sliderretaining means.

Fig. 6 is a cross sectional view through the small end of *thel slidershowing the coupled stringers and illustrating a modificatiom Fig. 7 isa view similar to Fig. 6 showing another modification.

Fig. 8 is a sectional detail view of the inner end portion of one formof sealing strip which is ein` Figs. 9 and 10 are views similar to Fig.8 showing other forms of strip.

' and similar footwear, as well as to body garments wherein it is onlyessential to carry the seal to the point of closure of a fastener. It isone of the purposes of our present invention to provide a tapeconstructionwhich is adaptable to all types and kinds of fasteners ofthe kind under consideration while at the same time providing a fastenerstructure which employs an end stop construction and a slider structurewhich effects a seal at the end of the fastener and around the sliderwhen the fastener is in closed position. This type of construction issuitable for forming a closure to openings of any type or kind, such forexample, as pockets of various garments, the closure of various typesand kinds of containers, such for example, as gas mask containers, or inany use where a hermetic closure is desired for an opening in mechandiseor articles of different kinds and descriptions.

In Figs. 1 to' 4 inclusive is illustrated one adaptation of theinvention. In these figures, I0 and II represent the two stringers ofone pair, and I2 and I3 represent corresponding stringers of thecompanion pair. On the beaded edges of the stringers I0, II, are linksI4, I5, and on corresponding edges of the stringers I2, I3, are links iI6 and i'l.

Arranged between each pair of Stringer tapes are sealing strips I8 andI9, comprising folded strips or rubber, rubber impregnated cloth, rubbertreated fabric, including synthetic rubber or compounds, such asNeoprene or Keroseal. In

certain forms f construction, these sealing strips are foldedintermediate side edges thereof to form an inner loop 20, note Fig. 8,which illustrates the -folded portion of the strip I9, and the folded orlooped portion 20 of each strip extends beyond the beaded edge of thestringer tapes, but

terminates short of the outer extremities of thelinks attached thereto,so that when the Stringer links I4--I6 I5-I1, are coupled together, 'theedges 2Il will be brought into abutting relationship to each other underslight compression, ef-

fecting a seal between the strips I8, I 9,v where they abut betweenopposed coupled links.

It will also be apparent that the coupled links have a pressureengagement upon upper and lower surfaces ofI the sealing strips tosupport these strips in abutting and sealed relationship as is morespecifically pointed out in the'prior application referred to.

This firm engagement of the coupled links is made possible by securingthe stringertapes. I0

and II, and I2 and I3, to the strips I8, adjacent y and kind defined weemploy a novel slider structure 23 comprising a top wall 2l and bottomwall web 26.

25 joined at the wide end portion thereof by a connecting web 26 whichinsteadof being substantially triangular in cross sectional form issubstantially of diamond shape cross sectional form as appearing in Fig.2 of the drawing. In addition to the difference in cross sectionalcontour, the web has centrally thereof an outwardly projecting ridge orrib 2'I which extends in the direction of 'the small or contracted endof the slider and is arranged on two sides only of the This rib servesto engageY the inner folded edges 20 of the sealing strips I8 and I9 asclearly noted in Fig. 3, and also indicated in Fig. 2 to eiect a sealbetween these strips within the slider structure when the latter is inthe closed position. This'rib will extend sufficiently to form apressure engagement of the sealing strips therewith, and at the sametime gives the necessary clearance for the stringer links within theslider body 23 as will be apparent from a consideration of Fig. 2. Thewalls 24 and 25 of the slider have at their side edges inturned flanges28, two of which are shown in section in Fig. 2 of the drawing in orderto clearly illustrate the invention; and these flanges extend from thenarrow contracted end of the slider to points short of lthe pointed end29 of the web 26. The upper and lower walls 2H, 25 of the slider alsoinclude at their wide ends projecting flanges 30 which extend beyondtheend 2S of the web and are adapted to form shields or guards over theends of the tapes and sealing strips where they are brought together andunited by a stitching or other suitable means as at 3 I.

4 At this securing point and adjacent thesame, the sealing strips I8Vand. I9, or their foldededges 2U, will be brought together underconsiderable pressure tov eiect a positive seal therebetween as isdiagrammatically illustrated in Fig. 4. While the beaded edges ofthe'stringer tapes I 0, I I, and I2, I3, are disposed in close proximityto each other, it is not absolutely essentiall that these beaded edgesbe brought together. Before securing the stringer tapes together as at3i, an

end sealing strip or sheet 32 is first arranged upon the outer surfacesof the stringer tapes preferably by folding a single sheet of resilientr material around the ends of the tapes and extending this sheetinwardly onto the tapes to form inner edges 33 which are adapted to been-- gaged by the pointed end 29 of the web 26 and by the ends of theinturned flanges 28 as indicated in Fig. 2 of the drawing, the edges 33being exed in this operation. I

In addition to uniting the stringers as at 3I, another coupling isprovided in the form of two transversely arranged top and bottom plates33 and 35 riveted together as seen at 36. The top plate 34 also includesan upwardly projected headed pin 31 centrally thereof which forms partof a coupling or slider retaining means. The other part of thisretaining means comprises a pull 38 movably supported upon the slider 33and having a keyhole aperture -39 through which `the pin 31 is passed inthe operation of securing Athe pull 38 to said pin. It will, of course,be understood that .the slider 23 is retained in position under tensionin effecting a seal'between the lparts within the slider body while atthe same time firmly supporting thepull 38 against accidentaldisplacement.

It is also preferred that a ller body 40 be employed between the foldsof the sealing strips I8, I9, where secured together at 3l, andalso bytheretaining means 34, 35, 36, to compensate for the omission of thelinks on the stringer tapes, and the sealing strip 32 is madesuiiiciently thick, particularly at the 4edge portion 33 thereof toestablish firm engagement of the strip with the inner surfaces of theanges 30, which further aids in effecting the seal of the fastener vaswill be apparent.

The pivot end 4I of the pull is movable along .a channeled rib 42 on thetop wall 0f the slider in operating the pull to open and close thefastener. However, any desired type and kind of pull mounting may beemployed.- At 43 is shown a linger piece strap coupled with the pull tofacilitate operation thereof.

In Fig. 5 of the drawing is shown a slight modication of the structureshown in Figs. 1 to 4 inclusive. In this figure a pull Mi has projectingfrom one surface thereof a headed pin 135, forming the button part of asnap button fastener, the female or spring socket part being illustratedat H6. This lpart is substituted for the plate 3E and is secured inposition by rivets 41, similar to the rivets 36, which also pass througha bottom plate 33.v Otherwise, the structure of Fig. 5 is identical withthat shown in the other figures; and no further brief description isrequired, and like parts are identified by like references.

In Fig. 6 is shown a slight modification of the structure shown in theother figures, primarily' from the standpoint of the form andarrangement of the sealing strips in connection with the Stringer tapes.In this figure 49 and 5I) represent the Stringer tapes of one pair; 5Iand 52 the stringer tapes Vof the other pair. At 53 and 54 are shownsealing strips which are substituted for the strips I8 and I9. The onlydifference between `these two strip constructions is that wider sealingstrips are employed, and instead of folding the strips centrally, theyare folded off-center to form the inner abutting rounded edges 55, thusproviding an extending side 56 on each strip which extends the fullwidth of the tapes of the stringers 49', 52. With this type ofconstruction,-

the extensions 56 and the tapes of the stringers 49, 5I, outwardly ofthe short ends 58 of the sealing strips. This will provide anotheradaptation of the structure to various uses; and it will appear thatwith this structure, the sealing strips extend in an overlapped relationonto the supports 51.

In Fig. '7 of the drawing a further slight modification. of the sealingstrip construction is shown, wherein the sealing strips 59 and 60 haveboth side portions extending the full width of the tapes of the pairs ofstringers indicated generally by the reference characters 6I and 62, andthe supports 63 to which thestringers are attached ,are arranged betweenboth sides; or in other words, within the fold of the sealing strips 59and 60. f

It will, of course, be apparent that the extension of the sealing stripsthroughout the full width of the Stringer tapes is essential only whenthe stringer tapes are composed of fabric material, but where thesestrips are composed of rubber or` rubberized materials or processedmaterials to render the same waterproof, the extension ofthe sealingstrips is not necessary and shorter strips of the type and kindillustrated, for example in Fig. 3 of the drawing, can be employed.Moreover, in some installations, the Seal can be readily accomplishedwith a structure of the type illustrated in Fig. 3 whether or not thestringer strips are of waterproof or other characteristics necessary toproduce the hermtic type of fastener.

while we have illustrated in Figs. 1 to 8 inclusive sealing strips of aspecific structure, it will be understood that various types and kindsof strips may be employed. For example, in Fig. 9 of the drawing, astrip of the general type shown in Figs. 1 to 8 is. illustrated whereina filler 64 is disposed in the folded portion 65 of the strip. The llerwill preferably be of a soft and yieldable structure so as to compensatefor the firm engagement of adjacent ends of the sealing strips ineffecting the seal longitudinally of the stringers thereof. In Fig. 10is illustrated another adaptation of the invention in which figure asealing strip 66 of rubber, synthetic rubber, or the like, is employed,and the inner end of this strip will ppreferably be slightly enlarged orbeaded as indicated at S] in order to insure the compresy ported andheld in abutting engagement'with throughout -the full length disposedintermediate the links, a slider movable longitudinally of saidstringers to couple the pair of chains of said stringers and in support'I ing the links thereof in firm engagement with said sealing strips, andsaid sealing strips extending the full width of the link chains.

4. A separable fastener comprising two stringers, each stringer having apair of link chains, a folded sealing strip disposed between each pairof link chains and secured thereto adjacent the links of said `chainswith the folds insaid-strips disposed intermediate the links, a slidermovable longitudinally of said stringers to couple the pair of chains ofsaid stringers and in supporting the links ?.thereof in firm engagementwith said sealing st'rips, said sealing strips extending the full widthof the link chains, and means coupling the stringers adjacent end linksthereon, with the sealing strips in abutting relationeach other by thepressure engagement of the coupled links upon upper and lower surfacesof the abutted strips. For purposes of description each stringer of thefastener may be said to com'- prise a pair of link chains, eachchain'being formed from a mounting strip to one edge of which areattached the coupling links. Between each pair of link chains aredisposed the sealing strips. mounted between the link chains that whenthe link chains of both stringers are coupled tovgether, the links willbear upon or have a slight pressure engagement upon the intervening andabutting sealing strips.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. A hermetic closure of the class described comprising a pair ofsealing strips, each strip having a fold therein and being composed ofwaterproof material, means attached to each side of each strip forjoining said strips with the folded edges in abutting relationship toeach 'I'hese sealing strips are preferably so ship, and said last namedmeans including a supplementary sealing strip cooperating with saidslider to form a seal at said end of the stringers.

5. A separable fastener comprising two stringers, each stringer having apair of link'chains, a, folded sealin'g strip disposed between each pairof link chains and secured thereto adjacent the 'links of said chainswith the folds in said strips disposed intermediate the links, a slidermovable longitudinally of said stringers to couple the pair of chains.of said stringers and in supporting the links thereof in firm engagementwith said sealing strips, said sealing strips extending the full widthof the link chains, means I at one end of the stringers adjacent endlinks thereon for coupling said stringers with the sealing strips inabutting relationship, and means on the slider cooperating with saidlast named' means to retain the slider in firm engagement with said end,to form a seal at said end of the' A stringers.

other, means movable longitudinally of said strips to couple anduncouple said last named means,

l and means cooperating with said last named means joining and forming aseal at one end of said strips. y

2. A separable fastener comprising stringers adapted to be coupled anduncoupled, each stringer comprising a pair of link chains with a sealingstrip disposed between said link chains, means for coupling link chainsof one stringer with those of the companion stringer to maintain thelink chains of both stringers in engagement with thesealing strip ofboth stringers while maintaining adjacent edges of said strips inabutting relationship to each other, said abutting edges of, the stripscomprising yieldable portions adapted to flex in coupling said linkchains,- means coupling said strips in abutting relationship to eachother adjacent end links of said link chains, and said last named meansincluding means cooperating with the first named means to form a seal atsaid end of the stringers.

3, A separable fastener comprising two stringers, each stringer having apair of link chains',4

end of theA stringers adjacent end links thereon for coupling saidstringers with the sealing strips .in abutting relationship and means onthe slider cooperating with said last named means to retain the sliderin firm engagement with said end ,t0`form a seal at said end of thestringers, and other means on the slider cooperating with said sealingstrips to effect a seal between the strips and slider when the slider isin closed position. 7. In hermetic fasteners of the class describedemploying stringers having sealing strips united to form a s eallongitudinally of the stringers, an end coupling for said stringerscomprising means joining the stringers with said sealing strips inabutting relationship, a slider .movable along the stringers to coupleand uncouple same, and means on the slider and said'end coupling forminga seal between the slider and stringers when the -slider is in closedposition.

8. In hermetic fasteners of the class described to form a seallongitudinally of the stringers, an

end coupling for said stringers comprising means joining the stringerswith said sealing strips in abutting relationship, a slider movablealong the stringers to couple and uncouple same, means on the slider andsaid end coupling forming a seal between the slider and stringers whenthe slider is in closed position, andmeans retaining the slider intensional engagement with the end coupling of said stringers.

9. In separable -fasteners employing stringers and a slider movablelongitudinally of thestrmgers to couple and uncouple the same, ayieldable end stop uniting the stringers adjacent end links thereon. andsaid slider and end stop having inter-engaging parts adapted to becoupled together when the slider is in closed position to support theslider in pressure engagement with said yieldable end stop and againstaccidental displacement therefrom.

10. In separable fasteners employing stringers and a slider movablelongitudinally of the string- Y ers to couple and uncouple the same, ayieidable end stop uniting the stringers adjacent end links thereon,said slider and end stop having intervengaging parts adapted to becoupledtogether when the slider is in closed position t0 support theslider in pressure engagement with said yieldable end stop and againstaccidental displacement therefrom, said end stop including a sealingstrip arranged upon upper and lower surfaces of the stringers, and saidslider having protruding anges adapted to engage said sealing strip toeffect a seal at said end oi the stringers.

11. In separable fasteners of the class described. a slider, said slidercomprising a chan-A neled body having spaced walls' joined centrally ofone end portion by a connecting web, opposed walls of the slider havinginwardly extending side flanges, said web having a projecting ribcentrally of. opposed sides thereof and with respect 12. In separablefasteners of the class described, a slider, said slider comprising achanneled body having spaced top and bottom walls contracted at one end,the 'other wide end of said body having a central web uniting saidwalls. said web being contracted in the direction of 'employing'stringers having sealing strips united the narrow end of said body, saidcontracted end of the web having an outwardly projecting rib centrallywith respect to said top and bottom walls, and said rib being contractedin the direction of the narrow end of said body and projecting beyondthe 'corresponding .end of said web.

13. In separable fasteners of the class described, a slider, said slidercomprising a channeled body having spaced top and bottom wallscontracted at one end, the other wide end of said body having a centralweb uniting said Walls, said web being contracted in the direction ofthe narrow end of said body, said contracted end of the web having anoutwardly projecting rib centrally with respect to said top and bottomwalls, said rib being contracted in the direction of the narrow end ofsaid body and projecting beyond the corresponding end of said web, saidweb being contracted in the direction of the wide end portion of saidwalls, and said top and bottom walls having anges projecting beyond thelast named contracted'end of said web.

14. In hermetic separable fasteners forming closures for openings, saidfastener comprising stringers adapted to be coupled a'nd unoupled by aslider movable along the stringers, each stringer comprising twostringer 'tapes with coupling links arranged longitudinally of one edgeportion of said tapes, means extending longitudinally of thestringersproviding a seal throughout the full length of an opening controlled bysaid fastener when the stringers are coupled by said slider, and saidmeans including means forming a seal around the slider when 'in closedposition,

15. In hermetic fasteners employing stringers comprising a pair of linkchains. sealing means disposed longitudinally of the stringersinterstringers. said slider having projecting members engaging. the linkchains andsaid sealing means to provide a seal around the slider whenthe 'slider is in the position coupling the stringers. and tbeend of thestringers engaged by the slider when in closed position having othersealing means cooperating with predetermined projecting members of saidslider in effecting said seal.

DAVIS MARINSKY. LOUIS H. MORIN.

CERTIFICATE oF CORRECTION. Patent No. 2,521,926; June 15, 1915. v

. DAVIS musa, ET AL. l

It is hereby certifiaithlt error appears' in the" printed specification/of the above numbered. patent requiring correction ls'followsz. Page1,'firat .colunmrline' for"th.roug11".rendthrou1out; liclp, for "of"before "various' read --to--Ag/and' second coiuinn, line 21, for *o r"before rnbberI .read Qr"; page 2,111 eolmm, une 65,401' 'ander 55'rene-nder 25"; and that the said'Letters Patent shouldbe ad with thiscorrection' -therein that the sale may conform to the record ofthe casein ,thefPate'nt Office'. A A

signed and sealed una 27m any erlruly, A. p. 19M.-

l Henry Ven Arsda1e, (Seal) A Acting Commissioner of Patent.

